Answer:
-30
Step-by-step explanation:
it just is
Review the proof of the identity cos(π − A) = −cosA.
cos(π − A)
Step 1: = cosπcosA − sinAsinπ
Step 2: = (−1)(cosA) + (sinA)(0)
Step 3: = −1cosA + (sinA)(0)
Step 4: = −cosA + 0
Step 5: = −cosA
At which step was an error made?
step 1
step 2
step 3
step 4
Answer:
error in step 1
Step-by-step explanation:
well where is does the step not make sense?
remember cos(pi) = -1 and sin(pi)=0
that means step 1 is strange... it didn't distribute properly
it should have been:
cos(pi) - cos(A)
hope that helps! ^-^
The error is made at step 1). The correct trigonometric identity is cos(π - A) = cosπcosA + sinπsinA.
What are trigonometric identities?Trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined.
cos(π - A) = cosπcosA + sinπsinA
Learn more about trigonometric identities here
https://brainly.com/question/14746686
#SPJ3
Which expression is equivalent to 4^5x4^-2
Answer:
4^3
Step-by-step explanation:
When you are multiplying exponents with the same base (for this problem the base is 4) you add together the exponents. It is kinda hard to explain but that is just a rule you can use. So, 4^(5+(-2))=4^3
Hurry I only have 5 minutes!!!!!!!!!!! Please help me I don't understand!!!!
The average of the first five numbers drawn was 2499. The first four numbers were 4165,320,7142, and 64. What was the fifth number?
Answer:
804
Step-by-step explanation:
Answer:
804?
Step-by-step explanation:
maybeeeeeeeeee?
The ______ developed their own Christian Church, which became known as the Eastern Orthodox Church
Answer:
Byzantines
Step-by-step explanation:
The Byzantines developed their own Christian Church, which became well known as the Eastern Orthodox Church
Wich of the following represents a true statement I Need Help asap well Mary you brain list
Answer:
B is trueStep-by-step explanation:
A. 4^5*4^5 = 4^(5+5) = 4^10 ≠ 4^15
FALSEB. (5^4)^5 = 5^(4*5) = 5^20
TRUEC. 3^1*3^0 = 3^(1+0) = 3^1 ≠ 3^0
FALSED. 6^20/6^10 = 6^(20 - 10) = 6^10 ≠ 6^2
FALSEWhat is 75% of 30 menutes
Answer:
22.5
Step-by-step explanation:
:)
Chantel counted 48 books on 6 shelves in the library. How many books would she expect to count on 12 shelves?
Shantels net worth is 5,480.80 dollars.Her liabilities are 3,260.60.If she increases her assets by 10% and decreases her liabilities by 10%, what is her net work
Answer:
6681.00Step-by-step explanation:
Given
Net worth = 5480.80Liabilities = 3260.60Assets = Liabilities + Net worth
Assets = 5480.80 + 3260.60 = 8741.40
If assets increase by 10% and liabilities decrease by 10%, then net worth is:
(8741.40 + 10%) - (3260.60 - 10%) =8741.40*1.1 - 3260.60*0.9 =6681.00what is the fraction equivalent of 3 4/5
Answer:
19/5 (improper fraction), 3.8 (decimal form) those are all I can think of
find two numbers adding to 40 such that the sum of their square is as small as possible
Answer: 20+20
Step-by-step explanation: The sum of their square is 800 which is the lowest i've found so far
SURFACE AREA HELP ASAP!!
Answer:
Step-by-step explanation:
can you get a bigger picture pls
Solve for all values of x by factoring.
x^2-6x+20=6x
Answer:
x=10 or x=2
Step-by-step explanation:
msg me if ya need step
<3, Red
Anthony cut a piece of metal that weighed 2,700 grams. Dionne cut a piece of metal that weighed 3,200 grams.How much heavier was Dionne's piece, in grams
Answer:
500 grams
Step-by-step explanation:
3,200-2,700=500
Martin has 38 dollars. Raymond has I fewer dollars than Martin. Choose the expression that shows how much money Raymond has.
+ 38
Answer:
38-l
Step-by-step explanation:
I gave away all 300 pieces of candy.I ate 12 fun size snickers, and had 24 trick-or-treaters come to my door.how many candies did I give to each trick or treater?use c for candies
Answer:12
Step-by-step explanation:
solutions of quadratic equations by extracting the square root .
1.3x²=27
2.x²-144=0
3.x²-20=25
4.4x²-16=36
5.(2x-1)² =36
Answer:
1: x= 3
2:x=12
3:x= 6.7
4:x=3.6
It takes 19.8 hours of work to plant a field of vegetables. Each person in the Fram family worked for 3.3 hours to help plant the field. How many people are in the Fram family?
Answer:
There are 6 people in the Fram family
Step-by-step explanation:
19.8 ÷ 3.3 = 6
Hope this helped!!
Answer:
19.8
3.3
19.8/3.3
6
Step-by-step explanation:
got it right
What is 5.2 plus 176.2
Answer:
181.4
Step-by-step explanation:
Answer:
5.2 + 176.2 = 181.4
Step-by-step explanation:
what must be true and what letter is the answer?
Answer:
4th one is correct for x/y
320÷b∙20 and 320÷(b∙20) for b=4
Answer:
Step-by-4vttbrbwtetbb4tbtb44tny4ny4nyn4tbryn4y
step explanation:
*Hard*
Look at attachment or picture
Answer:
x = 10.5
Step-by-step explanation:
Work in the screenshots
I used a online calculator
symbolab. com
LESSON 3 WORK WITH SEQUENCES OF TRANSFORMATIONS AND CONGRUENCE
Activity Thinking About Sequences
Have you ever rearranged furniture in a room? When you
move a chair from one side of the room to another, this can
How many ways can you describe the movement of
the furniture between the before and after pictures?
LESS
Before
Ex
Tri
of Transformations Around You
> Do this activity together to describe sequences of
transformations in the real world.
Pre
tra
yo
be described as a sequence of transformations!
?
After
9514 1404 393
Answer:
an infinite number of ways
Step-by-step explanation:
The transformation involves a series of reflections, rotations, and translations. Any reflection and translation can be described an infinite number of ways, depending on what you choose for the line of reflection (and how many reflections you choose), and how far you do each translation. Similarly, any rotation can described an infinite number of ways, depending on the amount of rotation and the chosen center point.
So, the answer to the question asked is, "You can describe the movement of the furniture an infinite number of ways."
__
One way to describe it is this:
The upper chair was translated to the right, then reflected* across the horizontal centerline. The couch was rotated 90° about the center of the room and translated upward. The coffee table was rotated -90° about its center and translated to the right.
__
* As a practical matter, a piece of furniture cannot be reflected. It can only be rotated or translated. However, the pillows in the upper chair are moved from the left arm to the right arm, so the appearance is that of a reflection. One might say the chair was rotated 180°, and the pillows were translated.
Elijah opens a savings account with $60. Each week after, he deposits $25. In how many weeks will he have saved $600?
Answer:
25w + 60= 600
25w= 540
w=21.6
Step-by-step explanation:
First make the equation
1. Subrtract 60 from each side
2. Now divide 25 on both sides
3. now you have the answer
I GOT A DECIMAL SO MAYBE ROUND OR PUT THAT EXACT ANSWER.
Answer:
24
Step-by-step explanation:
What I did was divide 600 by 25 and got 24.So, Elijah has $600 after 24 weeks
Which set of algebra tiles represents the sentence below? Luis added four shells to his collection. 1 box contains x and 4 boxes contain minus signs. 4 boxes contain x and 1 box contains a plus sign. 1 box contains x and 4 boxes contain a plus sign. 4 boxes contain x and 1 box contains a minus sign.
Answer:
c
Step-by-step explanation:
Answer
C
Step-by-step explanation:
Luke drove 260 miles in 4 hours. If he continued at the same rate, how far would he travel in 18 hours?
Answer:
1170 miles in 18 hours.
Step-by-step explanation:
Answer:
1170
Step-by-step explanation:
260 ÷4 = 65
65×18=1170
J is the Midpoint of Segment MN. If MJ=23, Find MN.
Answer:
46?
Step-by-step explanation:
What is the slope of the line that passes through the points (-1,-10) and (-1,-2)? Write your answer in simplest form.
Answer: undefined
Step-by-step explanation:
p(x) = 2x2 + 5x - 9
Part A
Evaluate p(1.75).
Answer:
Hi there!
Your answer is:
p(1.75) = 5.875
Step-by-step explanation:
p(1.75) means to plug in 1.75 for x
p(1.75)= 2(1.75)^2 + 5(1.75) - 9
6.125 + 8.75 - 9
SIMPLIFY
5.875
Hope this helps!
I need help ASAP!!!!!
Answer:
y = 50
Step-by-step explanation:
Firstly, let's make an equation. We know that when y is 15, x is 3. Or, in other words, y is 5 times what x is. Therefore we can use the equation, y = 5x.
Now, just plug x into the equation.
y = 5(10)
y = 50
What are the terms in the expression 4mn+m+5
Answer:
4mn,m and, 5. The terms are anything that's not a symbol like + or = in an equation
P.s.
Please give me brainliest for my next rank.
